Py-trees

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* [js] accepting trees flagged with no status/graph change, `122 <https://github.com/splintered-reality/py_trees_js/pull/122>`_
* [js] blackboard views, `125 <https://github.com/splintered-reality/py_trees_js/pull/125>`_, `#133 <https://github.com/splintered-reality/py_trees_js/pull/134>`_, `#122 <https://github.com/splintered-reality/py_trees_js/pull/134>`_, `#135 <https://github.com/splintered-reality/py_trees_js/pull/135>`_, `#136 <https://github.com/splintered-reality/py_trees_js/pull/136>`_

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* [doc] add many missing packages to satiate autodoc

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* [meta] add children monkeypatching for composite imposters
* [blackboard] check for nested variables in WaitForBlackboard

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* [doc] add missing rqt-py-trees image
* [infra] bugfix missing install rule for mock sensors script

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* [infra] setup.py tests_require, not test_require

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* [infra] update maintainer email